/*
* Decode and print Zephyr packets.
*
- * http://web.mit.edu/zephyr/doc/protocol
+ * https://web.mit.edu/zephyr/doc/protocol
*
* All rights reserved.
/* \summary: Zephyr printer */
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
#include "netdissect-stdinc.h"
#include <string.h>
#include <stdlib.h>
+#include "netdissect-ctype.h"
+
#include "netdissect.h"
+#include "extract.h"
struct z_packet {
const char *version;
static char z_buf[256];
static const char *
-parse_field(netdissect_options *ndo, const char **pptr, int *len, int *truncated)
+parse_field(netdissect_options *ndo, const char **pptr, int *len)
{
const char *s;
/* Ran out of packet data without finding it */
return NULL;
}
- if (!ND_TTEST_SIZE(*pptr)) {
- /* Ran out of captured data without finding it */
- *truncated = 1;
- return NULL;
- }
- if (**pptr == '\0') {
+ if (GET_U_1(*pptr) == '\0') {
/* Found it */
break;
}
{
if (!*recipient)
recipient = "*";
- nd_snprintf(z_buf, sizeof(z_buf), "<%s,%s,%s>", class, inst, recipient);
+ snprintf(z_buf, sizeof(z_buf), "<%s,%s,%s>", class, inst, recipient);
z_buf[sizeof(z_buf)-1] = '\0';
return z_buf;
}
zb_string = z_buf;
while (*zb_string) {
- *zb_string = ND_TOLOWER((unsigned char)(*zb_string));
+ *zb_string = ND_ASCII_TOLOWER(*zb_string);
zb_string++;
}
return z_buf;
}
+#define ZEPHYR_PRINT(str1,str2) \
+{ ND_PRINT("%s", (str1)); fn_print_str(ndo, (const u_char *)(str2)); }
+
void
-zephyr_print(netdissect_options *ndo, const u_char *cp, int length)
+zephyr_print(netdissect_options *ndo, const u_char *cp, u_int length)
{
struct z_packet z = {
- NULL, /* version */
- 0, /* numfields */
- 0, /* kind */
- NULL, /* uid */
- 0, /* port */
- 0, /* auth */
- 0, /* authlen */
- NULL, /* authdata */
- NULL, /* class */
- NULL, /* inst */
- NULL, /* opcode */
- NULL, /* sender */
- NULL, /* recipient */
- NULL, /* format */
- 0, /* cksum */
- 0, /* multi */
- NULL /* multi_uid */
+ NULL, /* version */
+ 0, /* numfields */
+ 0, /* kind */
+ NULL, /* uid */
+ 0, /* port */
+ 0, /* auth */
+ 0, /* authlen */
+ NULL, /* authdata */
+ NULL, /* class */
+ NULL, /* inst */
+ NULL, /* opcode */
+ NULL, /* sender */
+ NULL, /* recipient */
+ NULL, /* format */
+ 0, /* cksum */
+ 0, /* multi */
+ NULL /* multi_uid */
};
const char *parse = (const char *) cp;
int parselen = length;
const char *s;
int lose = 0;
- int truncated = 0;
ndo->ndo_protocol = "zephyr";
/* squelch compiler warnings */
#define PARSE_STRING \
- s = parse_field(ndo, &parse, &parselen, &truncated); \
- if (truncated) goto trunc; \
+ s = parse_field(ndo, &parse, &parselen); \
if (!s) lose = 1;
#define PARSE_FIELD_INT(field) \
if (!lose) field = s;
PARSE_FIELD_STR(z.version);
- if (lose) return;
+ if (lose)
+ goto invalid;
+
if (strncmp(z.version, "ZEPH", 4))
return;
PARSE_FIELD_STR(z.multi_uid);
if (lose)
- goto trunc;
+ goto invalid;
ND_PRINT(" zephyr");
if (strncmp(z.version+4, "0.2", 3)) {
- ND_PRINT(" v%s", z.version+4);
+ ZEPHYR_PRINT(" v", z.version+4)
return;
}
const char *ackdata = NULL;
PARSE_FIELD_STR(ackdata);
if (!lose && strcmp(ackdata, "SENT"))
- ND_PRINT("/%s", str_to_lower(ackdata));
+ ZEPHYR_PRINT("/", str_to_lower(ackdata))
}
- if (*z.sender) ND_PRINT(" %s", z.sender);
+ if (*z.sender) ZEPHYR_PRINT(" ", z.sender);
if (!strcmp(z.class, "USER_LOCATE")) {
if (!strcmp(z.opcode, "USER_HIDE"))
else if (!strcmp(z.opcode, "USER_UNHIDE"))
ND_PRINT(" unhide");
else
- ND_PRINT(" locate %s", z.inst);
+ ZEPHYR_PRINT(" locate ", z.inst);
return;
}
if (!strcmp(z.class, "ZEPHYR_ADMIN")) {
- ND_PRINT(" zephyr-admin %s", str_to_lower(z.opcode));
+ ZEPHYR_PRINT(" zephyr-admin ", str_to_lower(z.opcode));
return;
}
PARSE_FIELD_STR(c);
PARSE_FIELD_STR(i);
PARSE_FIELD_STR(r);
- if (!lose) ND_PRINT(" %s", z_triple(c, i, r));
+ if (!lose) ZEPHYR_PRINT(" ", z_triple(c, i, r));
}
return;
}
return;
}
- ND_PRINT(" %s", str_to_lower(z.opcode));
+ ZEPHYR_PRINT(" ", str_to_lower(z.opcode));
return;
}
if (!strcmp(z.inst, "HM")) {
- ND_PRINT(" %s", str_to_lower(z.opcode));
+ ZEPHYR_PRINT(" ", str_to_lower(z.opcode));
return;
}
}
if (!strcmp(z.class, "HM_CTL")) {
- ND_PRINT(" hm_ctl %s", str_to_lower(z.inst));
- ND_PRINT(" %s", str_to_lower(z.opcode));
+ ZEPHYR_PRINT(" hm_ctl ", str_to_lower(z.inst));
+ ZEPHYR_PRINT(" ", str_to_lower(z.opcode));
return;
}
}
if (!strcmp(z.class, "WG_CTL")) {
- ND_PRINT(" wg_ctl %s", str_to_lower(z.inst));
- ND_PRINT(" %s", str_to_lower(z.opcode));
+ ZEPHYR_PRINT(" wg_ctl ", str_to_lower(z.inst));
+ ZEPHYR_PRINT(" ", str_to_lower(z.opcode));
return;
}
!strcmp(z.opcode, "REALM-ANNOUNCED") ||
!strcmp(z.opcode, "NET-VISIBLE") ||
!strcmp(z.opcode, "NET-ANNOUNCED")) {
- ND_PRINT(" set-exposure %s", str_to_lower(z.opcode));
+ ZEPHYR_PRINT(" set-exposure ", str_to_lower(z.opcode));
return;
}
}
if (!*z.recipient)
z.recipient = "*";
- ND_PRINT(" to %s", z_triple(z.class, z.inst, z.recipient));
+ ZEPHYR_PRINT(" to ", z_triple(z.class, z.inst, z.recipient));
if (*z.opcode)
- ND_PRINT(" op %s", z.opcode);
+ ZEPHYR_PRINT(" op ", z.opcode);
return;
-trunc:
- nd_print_trunc(ndo);
- return;
+invalid:
+ nd_print_invalid(ndo);
}